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| Mirrors > Home > MPE Home > Th. List > Mathboxes > eldmcoss | Structured version Visualization version GIF version | ||
| Description: Elementhood in the domain of cosets. (Contributed by Peter Mazsa, 29-Mar-2019.) |
| Ref | Expression |
|---|---|
| eldmcoss | ⊢ (𝐴 ∈ 𝑉 → (𝐴 ∈ dom ≀ 𝑅 ↔ ∃𝑢 𝑢𝑅𝐴)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | dmcoss3 38716 | . . 3 ⊢ dom ≀ 𝑅 = dom ◡𝑅 | |
| 2 | 1 | eleq2i 2828 | . 2 ⊢ (𝐴 ∈ dom ≀ 𝑅 ↔ 𝐴 ∈ dom ◡𝑅) |
| 3 | eldmcnv 38538 | . 2 ⊢ (𝐴 ∈ 𝑉 → (𝐴 ∈ dom ◡𝑅 ↔ ∃𝑢 𝑢𝑅𝐴)) | |
| 4 | 2, 3 | bitrid 283 | 1 ⊢ (𝐴 ∈ 𝑉 → (𝐴 ∈ dom ≀ 𝑅 ↔ ∃𝑢 𝑢𝑅𝐴)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∃wex 1780 ∈ wcel 2113 class class class wbr 5098 ◡ccnv 5623 dom cdm 5624 ≀ ccoss 38383 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-ext 2708 ax-sep 5241 ax-nul 5251 ax-pr 5377 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-sb 2068 df-clab 2715 df-cleq 2728 df-clel 2811 df-rab 3400 df-v 3442 df-dif 3904 df-un 3906 df-ss 3918 df-nul 4286 df-if 4480 df-sn 4581 df-pr 4583 df-op 4587 df-br 5099 df-opab 5161 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-coss 38674 |
| This theorem is referenced by: eldmcoss2 38722 eldm1cossres 38723 |
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